Home / 117,890.17-162,688.47-64,175.61

Finding the Fourth Proportional to 117,890.17, 162,688.47 and 64,175.61

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Solution

The fourth proportional to 117,890.17, 162,688.47 and 64,175.61 is: 88,562.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,890.17 : 162,688.47 = 64,175.61 : x
  2. Step 2: Convert to fraction form
    117,890.17/162,688.47 = 64,175.61/x
  3. Step 3: Cross multiply
    117,890.17x = 162,688.47 × 64,175.61
  4. Step 4: Simplify right side
    117,890.17x = 10,440,631,802.22
  5. Step 5: Solve for x
    x = 10,440,631,802.22/117,890.17
  6. Step 6: Final answer
    x = 88,562.36

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.